Air ionizer



FIG. 1 is an isometric view of an air ionizer, in accordance with the design;

FIG. 2 is front view of an air ionizer of FIG. 1;

FIG. 3 is a rear view of the air ionizer of FIG. 1;

FIG. 4 is a left-side view of the air ionizer of FIG. 1;

FIG. 5 is a right-side view of the air ionizer of FIG. 1;

FIG. 6 is a top view of the air ionizer of FIG. 1; and,

FIG. 7 is a bottom view of the air ionizer of FIG. 1.

The broken lines shown represent the portions of the air ionizer that form no part of the claimed design 

CLAIM The ornamental design for an air ionizer, as shown and described. 